The Living World
Which living thing is a producer?
A. Rabbit
B. Grass
C. Hawk
D. Mushroom
Answer: B — Grass
What is the main energy source used by a solar panel?
A. Wind
B. Sunlight
C. Sound
D. Soil
Answer: B — Sunlight
Which of these is matter?
A. Light
B. Sound
C. Air
D. A shadow
Answer: C — Air
Which star is closest to Earth?
A. The Sun
B. Sirius
C. Polaris
D. Alpha Centauri
Answer: A — The Sun
Which tool is used to measure temperature?
A. Ruler
B. Thermometer
C. Balance
D. Stopwatch
Answer: B — Thermometer
Which process allows green plants to use light energy to make food?
A. Digestion
B. Respiration
C. Photosynthesis
D. Germination
Answer: C — Photosynthesis
Which energy change happens in a battery-powered torch?
A. Light → chemical → electrical
B. Chemical → electrical → light
C. Heat → sound → chemical
D. Electrical → chemical → movement
Answer: B — Chemical energy becomes electrical and then light energy
Sugar seems to disappear when stirred into water. What has happened?
A. The sugar has been destroyed
B. The sugar has dissolved and is still present
C. The sugar has changed into oxygen
D. The sugar has become alive
Answer: B — The sugar has dissolved
What causes day and night on Earth?
A. Earth rotates on its axis
B. The Sun moves around Earth each day
C. Clouds cover the Sun
D. The Moon turns off the sunlight
Answer: A — Earth rotates on its axis
Which tool is best for accurately measuring 50 millilitres of water?
A. Measuring cylinder
B. Metre ruler
C. Spring balance
D. Hand lens
Answer: A — Measuring cylinder
Consider this food chain:
Grass → Grasshopper → Frog → Snake
What would most likely happen to the frogs if the number of grasshoppers greatly decreased?
A. The frogs would increase
B. The frogs would have less food and may decrease
C. The frogs would begin making their own food
D. Nothing would change
Answer: B — The frogs would have less food and may decrease
Why does a light bulb turn off when a circuit’s switch is opened?
A. The battery becomes heavier
B. The electrical pathway is broken
C. The bulb loses all its glass
D. Electricity changes into water
Answer: B — The electrical pathway is broken
Why can a gas usually be compressed more easily than a liquid?
A. Gas particles have large spaces between them
B. Gas particles have no mass
C. Liquids contain no particles
D. Gas is not matter
Answer: A — Gas particles have large spaces between them
Why can we see the Moon even though it does not produce its own light?
A. It reflects light from the Sun
B. It is covered in fire
C. It receives light from Earth’s oceans
D. It produces electricity
Answer: A — It reflects sunlight
A student investigates how the amount of water affects plant growth. What should the student deliberately change?
A. The type of plant
B. The amount of water
C. The type of soil and the amount of sunlight
D. Everything in the experiment
Answer: B — The amount of water
How do thick, waxy leaves help a desert plant survive?
A. They attract more insects
B. They reduce water loss
C. They absorb more soil
D. They make the plant colder at night
Answer: B — They reduce water loss
What happens when the north pole of one magnet is placed near the north pole of another magnet?
A. They attract
B. They repel
C. They melt
D. Nothing happens
Answer: B — They repel
What is the best way to separate iron filings from sand?
A. Use a magnet
B. Add sugar
C. Freeze the mixture
D. Shine a light on it
Answer: A — Use a magnet
What is the main reason Earth experiences different seasons?
A. Earth moves much closer to the Sun during summer
B. Earth’s axis is tilted as it travels around the Sun
C. The Moon blocks sunlight during winter
D. The Sun becomes colder every six months
Answer: B — Earth’s axis is tilted
Why should a scientist repeat an investigation several times?
A. To make the experiment longer
B. To produce more reliable results
C. To guarantee their prediction is correct
D. To change the results
Answer: B — To produce more reliable results
In a pond, algae are eaten by tadpoles, and tadpoles are eaten by fish. Pollution kills most of the algae. What is the best prediction?
A. Tadpoles and fish may both decrease
B. Tadpoles will immediately become fish
C. Fish will begin eating sunlight
D. All organisms will increase
Answer: A — Tadpoles and fish may both decrease
Which investigation would fairly test how different surfaces affect a toy car’s travel distance?
A. Use the same car and ramp height but change the surface
B. Change the car, ramp height and surface each time
C. Push each car with a different amount of force
D. Use different cars on the same surface
Answer: A — Change only the surface
A chemical reaction occurs inside a sealed bag. The bag and materials have a total mass of 120 grams before the reaction. What should their total mass be afterwards?
A. 60 grams
B. 100 grams
C. 120 grams
D. 240 grams
Answer: C — 120 grams
Two fossils are found in undisturbed rock layers. Fossil A is in a much deeper layer than Fossil B. What is the best conclusion?
A. Fossil A is probably older
B. Fossil B is definitely larger
C. Both fossils are exactly the same age
D. Fossil A came from space
Answer: A — Fossil A is probably older
A student tests whether fertiliser improves plant growth. Plant A receives fertiliser and is placed in sunlight. Plant B receives no fertiliser and is placed in a dark cupboard. Why is this not a fair test?
A. The plants are too green
B. More than one variable was changed
C. Fertiliser cannot be tested
D. Plants do not require light
Answer: B — More than one variable was changed